The screen itself or the font? I'm scrapping the font for now but I'm almost certainly going to do something along those lines (as in the table + scrolls look) for the management screens.
As for the mip maps, I don't have photoshop and a few times over the last few months I've looked around for a GIMP mipmap editor plug-in with no success. Not just adjusting brightness, but also contrast, hue, saturation, blurring etc. As for lighter/darker, lighter during the day and darker at nights would be ideal but obviously that would require different textures for night and day, and if I had to choose I'd go with lighter mipmaps.